1167889 has 2 divisors, whose sum is σ = 1167890. Its totient is φ = 1167888.

The previous prime is 1167869. The next prime is 1167899. The reversal of 1167889 is 9887611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 846400 + 321489 = 920^2 + 567^2 .

It is an emirp because it is prime and its reverse (9887611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1167889 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a plaindrome in base 10 and base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1167839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583944 + 583945.

It is an arithmetic number, because the mean of its divisors is an integer number (583945).

2^1167889 is an apocalyptic number.

It is an amenable number.

1167889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1167889 is an equidigital number, since it uses as much as digits as its factorization.

1167889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 40.

The square root of 1167889 is about 1080.6891319894. The cubic root of 1167889 is about 105.3094123518.

The spelling of 1167889 in words is "one million, one hundred sixty-seven thousand, eight hundred eighty-nine".